How can man transcend time and space, and return to the past or the future

Physics is good

But I'll tell you beforehand, even if you can travel back in time, you can only go to the future, not to the past

To give you a simple example, for example, you've created a space-time tunnel that you can go back into.

Well, I ask you to think about such a slightly crazy question. You go back in time and shoot yourself 1 minute ago. What will be the result?

Obviously, this is a paradox. This assumption is contrary to the laws of nature, so it cannot be true. That is, it is impossible to go back in time.

Then in addition, I think it is very possible in the future.

First of all, you have to be clear that there is a rule in physics that the speed of light is the fastest speed in nature. It can't be surpassed.

Well, I'll give you one more hypothesis.

There was a round-the-world train that was traveling at nearly the speed of light. And you're on the train, so we know when we're in junior high school that people at this time will have the same speed as the train

Okay, so that's the point, what happens if you run fast on the train? Your speed plus the speed of the train -- of course, you can't go faster than the speed of light, so nature slows you down in order to stop you. Other words.

Your speed will slow down.

Okay, I think I made it clear here. As long as you stay on the train, time will be much slower than the outside world, so when the train travels at the speed of light for 100 years, and for you on the train, only about a month has passed, because your speed is slowed down

Well, so much hard work, hope to solve your problem!

Then you have to go faster than the speed of light to go back in time, and going to the future is against science. Even if you go to history, you can only see the images of what has happened, and you can't influence anything, so learn physics well.

Can't change. Because when you travel back in time, you're just a spectator and you can't participate in it. For example, if you want to do something, you can't do it for various reasons.

The factor that makes up the space you were originally in is history, and if history changes, your original space will disappear and be replaced by another space, and there will be no you in this space because you have disappeared.

Theoretically, it will definitely affect the present, because the butterfly effect does exist, and if it can really travel back, it may be possible to change a small thing to change the future.

Yes, it doesn't affect the present. Because if you go back in time and want to change time, time will have an extra tributary. It's another parallel universe.

Of course not, because it is impossible to travel back in time, so it is impossible to affect the present at all.

It will have a direct impact on the present, because the conditions in the past are certainly not as good as now, and the economy is not as good as the current development, so it will have a great impact on one's own life.

If it can be achieved in theory, then there will be changes in real life, which will affect what has already happened.

If I could travel back in time, I would go back to when I was a child. I was about 10 years old, and I was really happy at that time. In fact, this is impossible, how can people travel back. Let's make a hypothesis.

If I could go back in time, the first age I would choose to revisit would be when I was born. Everything was fresh then and I was completely innocent. I was ignorant of the pain and suffering of this world, and I was surrounded by people who loved me unconditionally.

It's a time of innocence and happiness that I would love to live again. If possible, the second age I choose to revisit will be when my parents are not gone. I want to go back to them, I want to know how they raised me, I lost them before I grew up, I want to go back in time and start over and let them know that I love them.

If I could travel back in time, I would like to go back to the age before I broke up with my first love. First love is a very good time, although sometimes there are some small contradictions, but overall it is still very happy, at that time we were still very much in love, and we can be together every day, it is so happy, if I go back to that age, I will cherish our love even more, and will not let anything ruin our happiness again.

If I could travel back in time, I would like to go back to the time when I missed the opportunity. I always miss opportunities, for example, when I am reading, I always think about other things instead of concentrating on reading. Or when I'm with my friends, I'm always thinking about my own things instead of communicating with them.

I want to go back in time and make good use of them when I still have the chance.

Many people have endless yearning for the idea of going back in time, but when you actually go back in time, you find that you don't want to go back to that age so much. Because at that age, you must not be mature enough to know how to face many things. So, when you really want to go back to the old age, it must be the age at which you have matured.

If you have a choice, most people are willing to go back to when they were children, life is always full of regrets, if we can travel through the past, what age will we return to ourselves, maybe we will go back to that age and meet better opportunities, maybe we will go back to that age and encounter more regrets.

If you are familiar with Einstein's "theory of relativity", you will know that when we can actually travel back in time and space, we can't change all this, for example: at that point, we are just a moviegoer, just like we are watching a movie, but we can't change the events in it; At that time, you will most likely be the first person to photograph Qin Shi Huang**, but it is absolutely impossible to talk to him.

Moreover, the "theory of relativity" is still an argument that has not been fully proven (here I overturn my conclusion above), and I personally doubt that "light is the fastest" conclusion (I'm not working against Einstein, heh), everyone may have heard some news about "foreknowledge" and "premonition", in other words, these "supernatural" people can know or sense what will happen in the future, if the "theory of relativity" is still correct, then, I would say, the human brain has a "wave" that can exceed the speed of light, " The generation of "foreknowledge" and "premonitions" may be the result of such waves being amplified under certain circumstances.

To summarize the above two points, what I personally want to say is: people can change the future, but it is impossible to change the past! This sentence may be a philosophy of life, but it does have a deep scientific ......

Write a little fast, there may be some typos, forgive me! ）

I feel like I can't travel through the past, I can only travel to the future, and if I can travel through the past and turn back the clock, why don't they come to us.

The light starts from point A, and every point in the universe is 11 o'clock at this time, and D sees the light at 8 o'clock in the morning, C sees the light at 9 o'clock in the morning, and B sees the light at 10 o'clock in the morning, and if we are at point C, and we come to point B in an instant, then what we see at this time is the 10 o'clock light of A. Relative to C at this time, we have traveled to the future; If we teleport from C to point D and see the light at point A8, we go back in time. So the closer we get to the light source at the opposite point (a), the more we travel to the future, and the farther away from the light source, we travel to the past, and since we see light, if we travel to the past (point d), we can't change the effect of point A on point C, we can only change point D.

If we travel to the future (point B), since point B sees the scene of point A10, then I can predict the future of point C, and I can change point C. So by traveling to the future, we can change the present (point C), and by traveling to the past, nothing can change the present...

Personal insights.

Sometimes it's okay, and I've changed.

Of course, if you go back in time, everything that happens in the future can change. Butterfly effect.

Physics is good

But. I tell you in advance that even if you can travel through time and space, you can only go to the future.

And there is no way to go back to the past

To give you a simple example, let's say you've created a plane tunnel.

It's possible to go back in time.

So. I ask you to think about such a slightly crazy question.

You go back in time.

Shoot yourself 1 minute ago. What will be the result?

Obviously, this is a paradox. This assumption is contrary to the laws of nature, so it cannot be true. That is, it is impossible to go back in time.

Well in addition. I think it's very possible to go to the future.

First of all, you have to be clear that there is a rule in physics, and that is.

The speed of light is the fastest in nature. It can't be surpassed.

So. I'll give you one more hypothesis.

There was a round-the-world train that was traveling at nearly the speed of light.

And you're on the train, then.

We knew when we were in junior high school that people at this time would have the same speed as the train, okay, and then the main point is, what if you ran fast forward on the train?

Your speed plus the speed of the train.

Of course, you can't go faster than the speed of light, so nature wants to stop you.

will slow you down. Other words. Your speed will slow down.

All right. I think I made it clear when I said that.

As long as you stay on the train, time will be much slower than the outside world, so when the train travels at the speed of light for 100 years, and for you on the train, only about a month has passed, because your speed is slowed down

Well, so much hard work, hope to solve your problem!